[Feature Request] Compatibility with Python 3.12

[antoinebrl]

🚀 Feature Request

I would like to understand what is the current plan and rough time estimates regarding the support for Python 3.12. Also, how can the community help reaching this milestone? More generally, I think this relates to the maintenance efforts for OmegaCong and Hydra: omry/omegaconf#1200

Motivation

Python 3.12 has been released 15 months ago and the Python community is rapidly adopting it. The latest release of Hydra (1.3.2) had support for py3.7 and py3.8 which have reached end of life since. The same faith will happen to py3.9 in about 9 months.

Pitch

Adopting Python 3.12 not only future-proofs the project but also demonstrates the commitment to embracing progressive technology and fostering a vibrant, collaborative community.

[Leon0402]

Do you mean for usage of hydra? You can use hydra in a python 3.12 (or even 3.13) project. There might be some specific things not working, but generally there is no issue. I agree though on the release / maintenance thing. That is an issue in deed.

[antoinebrl]

There might be some specific things not working

Do you have such examples?

[antoinebrl]

In my case, I'm facing some issues installing hydra-core with Python 3.12 if distutils isn't installed as system package:

$ uv run --no-project --no-cache --no-config --python 3.12 --python-preference only-managed --with hydra-core python

  × Failed to build `antlr4-python3-runtime==4.9.3`
  ├─▶ The build backend returned an error
  ╰─▶ Call to `setuptools.build_meta:__legacy__.build_wheel` failed (exit status: 1)

      [stderr]
      ~/.cache/uv/builds-v0/.tmpFrbgk9/lib/python3.12/site-packages/_distutils_hack/__init__.py:53: UserWarning: Reliance on distutils from stdlib
      is deprecated. Users must rely on setuptools to provide the distutils module. Avoid importing distutils or import setuptools first, and avoid setting
      SETUPTOOLS_USE_DISTUTILS=stdlib. Register concerns at https://github.com/pypa/setuptools/issues/new?template=distutils-deprecation.yml
        warnings.warn(
      Traceback (most recent call last):
        File "<string>", line 8, in <module>
        File "~/.cache/uv/builds-v0/.tmpFrbgk9/lib/python3.12/site-packages/setuptools/__init__.py", line 24, in <module>
          from . import logging, monkey
        File "~/.cache/uv/builds-v0/.tmpFrbgk9/lib/python3.12/site-packages/setuptools/logging.py", line 5, in <module>
          from . import monkey
        File "~/.cache/uv/builds-v0/.tmpFrbgk9/lib/python3.12/site-packages/setuptools/monkey.py", line 13, in <module>
          import distutils.filelist
      ModuleNotFoundError: No module named 'distutils'

      hint: `distutils` was removed from the standard library in Python 3.12. Consider adding a constraint (like `antlr4-python3-runtime >4.9.3`) to avoid building a
      version of `antlr4-python3-runtime` that depends on `distutils`.
  help: `antlr4-python3-runtime` (v4.9.3) was included because `hydra-core` (v1.3.2) depends on `antlr4-python3-runtime>=4.9.dev0, <4.10.dev0`

[charleswilmot]

#3064 sweepers are deprecated

[bencwallace]

In my case, I'm facing some issues installing hydra-core with Python 3.12 if distutils isn't installed as system package:

Do you have a way to reproduce this? I don't seem to be running into this issue, even in a python:3.12 container.

[antoinebrl]

I can no longer reproduce this so maybe uv has done some wonders.